Home / 15,333.24-21,157.87-8,617.78

Finding the Fourth Proportional to 15,333.24, 21,157.87 and 8,617.78

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Solution

The fourth proportional to 15,333.24, 21,157.87 and 8,617.78 is: 11,891.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,333.24 : 21,157.87 = 8,617.78 : x
  2. Step 2: Convert to fraction form
    15,333.24/21,157.87 = 8,617.78/x
  3. Step 3: Cross multiply
    15,333.24x = 21,157.87 × 8,617.78
  4. Step 4: Simplify right side
    15,333.24x = 182,333,868.93
  5. Step 5: Solve for x
    x = 182,333,868.93/15,333.24
  6. Step 6: Final answer
    x = 11,891.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.